Home / 138,860.56-191,573.31-80,707.63

Finding the Fourth Proportional to 138,860.56, 191,573.31 and 80,707.63

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Solution

The fourth proportional to 138,860.56, 191,573.31 and 80,707.63 is: 111,344.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,860.56 : 191,573.31 = 80,707.63 : x
  2. Step 2: Convert to fraction form
    138,860.56/191,573.31 = 80,707.63/x
  3. Step 3: Cross multiply
    138,860.56x = 191,573.31 × 80,707.63
  4. Step 4: Simplify right side
    138,860.56x = 15,461,426,863.49
  5. Step 5: Solve for x
    x = 15,461,426,863.49/138,860.56
  6. Step 6: Final answer
    x = 111,344.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.